ASTROSAT CZTI

Data Quality Report

Orbit 51251

Creation date: 2025-03-20T11:07:28.001807
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T01_9000006454_51251cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51251cztM0_level2_quad_clean.evt
Size (bytes)634,360,320102,242,880
Size605.0 MB 97.5 MB
Events in quadrant A6,160,842673,650
Events in quadrant B4,335,900730,703
Events in quadrant C8,136,021560,098
Events in quadrant D4,275,061615,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236112
B0183492
C0294022
D0183862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74072092.821655%
B74073114.198731%
C7407152520.588632%
D74072373.199676%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7892 7408 72 72 0.91% 0.97%
B 7892 7408 93 93 1.18% 1.26%
C 7892 7408 1308 1308 16.57% 17.66%
D 7892 7408 188 188 2.38% 2.54%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 3 2035010 10697.32 768 748 190.2
A 14 254 325505 1707.76 768 748 190.2
A 12 194 235275 1233.28 768 748 190.2
B 7 252 312163 1915.93 766 738 162.5
B 10 254 311717 1913.19 766 738 162.5
B 4 171 152252 932.14 766 738 162.5
C 4 12 4758548 25551.54 679 674 186.2
C 3 233 207374 1110.05 679 674 186.2
C 14 245 205958 1102.45 679 674 186.2
D 2 207 277900 1339.57 734 707 206.9
D 3 12 181834 875.32 734 707 206.9
D 7 96 160187 770.71 734 707 206.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter